Gold-extracting machine.



C. R.-DENNISON. GOLD EXTRAGTING MACHINE.

APPLICATION FILED JUNE 15, 1012.

Patented NO A, 1913.

2 SHEETS SEEET 1.

CULUMBIA PLANOGRAPH CO.,WASHINGTON, D. c.

' G. R. DENNI'SON. GOLD EXTRAGTING 111 0111112.

APPLICATION FILED JUNE 15, 1912.

Patented N011. 4, 1913.

3 SHEETS-SHEET 2.

1 73, Ee/zn ls' m UNITED STATES rarnn'r curios.

CHARLES R. DENNISON, OF YOUNGSTOWN, OHIO.

GOLD-EXTRACTING MACHINE.

Application filed June 15, 1912. Serial No. 703,911. I

To all whom it may concern:

Be it known that I, CHARLES R. DENNISON, a citizen of the United States, residing at Youngstown, in the county of Mahoning and State of Ohio, have invented certain new and useful Improvements in Gold-Extracting Machines, of which the following is a specification.

The present invention relates to certain new and useful improvements in gold extracting machines such as are adapted to be employed in connection with placer ground, tailings, free milling ore and the like, and which embodies novel features of construction whereby large quantities of ore or gold bearing gravel can be successfully treated Specification of Letters Patent.

and the gold or other precious metal eli'ectively and economically extracted therefrom.

The invention further contemplates thei provision of a gold extracting machine ofi this character which can be readily transported from place to place, which can be; cheaply and economically operated, and in; which there are no fine and delicate parts to be broken and get out of repair.

invention consists in certain novel combinamore fully appear as the description proceeds, the novel features thereof being pointed out in the appended claims.

reference is to be had to the following de- .scription and accompanying .drawings, in}

which Figure 1 is a top plan view of the improved machine showing the water tank with the gold extracting tube therein. Fig. '2 is a vertical longitudinal sectional view on the line 66 of Fig. 1. Fig. 3 is a transverse vertical sectional view on the line 7 7 of Fig. 1. Fig. 4c is a transverse -sectional view through the gold extracting tube, the upper section thereof being lifted away from the lower section, and Figs. 5 and 6 are ens larged fragmentary detail views of the agitator or drum which is mounted within the gold extracting tube.

Corresponding and like parts are referred to in the following description and indicated in all the views of the drawings by the same reference characters.

In carrying out the invention,.any suitable instrumentalities may be employed for the mechanical feeding of gold bearing material to the gold extracting means, as well as Patented Nov. 4, 1913.

for the mechanical removal of the tailings, so for illustrative purposes there is only shown-in the drawings the novel gold extracting means forming the subject matter of the claims herein. Accordingly, it will be understood that by means of suitable feeding appliances, the gold bearing gravel or ore is delivered to a tank 17 through the vertical guideway or elbow 18 which leads to oneend of the gold extracting tube 19.

The tank 17 is 'divided'by the longitudinal partition 20 into the two compartments 21 and 22, the compartment 21 receiving the gold extracting tube :19, while the compartment 22 serves as a water reservoir and tailings bin. Water is designed to flow into the vertical elbow or guideway 18 through the lateral opening 23 therein, and top'ass through the gold extracting tube together with the gold bearing material. A laterally disposed and upwardly inclined guideway or elbow, 2d leads the material from the opposite end of the gold extracting tube 19 into the reservoir or compartment 22 through the discharging opening 24: 1. Mechanical With these and other objects in view, the

means such as the turbine or propellerwheel- Q25 is utilized for causing the water to cirtions and arrangements of the parts as will Q:

culate continuously through the reservoir and gold extractingtube and for drawing the tailings through .thegold extracting 5 tube and discharging them throughthe lat- For a full understanding of the invention, j

eral elbow or guideway 24 into the reservoir 2 24' and as rigidly applied to a suitably driven longitudinal shaft 26 which extends through the curved walls of the elbow, a suitable stuffing box 27 being provided to, prevent leakage. a V

An agitator drum orreel is mounted within the gold extracting tube 19, and a quantity of mercury is'retained within this tube. In this connection it may be noted by reference to Fig. 2, that the inclined lower wall 18 of the vertical guideway or elbow 18 enters the gold extractingtube 19 at a point above the bottom thereof, while the inclined bottom of the lateral elbow or guideway 24'. also communicates with the gold extracting tube at a point above the bot-tom thereof,

thereby providing atrap or trough in the bottom of the tube within which the mercury can collect. A longitudinal shaft 31 extends through the tube 19 and is journaled in bear ings 32 at opposite ends of the tube, the said .bearings being held rigidly in position by means of the radial braces 83. This shaft 31 is in alinement with the propeller shaft 26, and one end of the shaft 31 is detachably connected by means of a suitable coupling 34 to a drive shaft 35 which extends through the inclined bottom of the vertical guideway or elbow 18, a suitable stuffing box 36 being provided to prevent leakage. A series of spiders 37 are provided at regular intervals upon the shaft 31, the said spiders carrying the rings 38 which may be formed of angle iron as shown. (See Figs. 5 and 6.) Longitudinally disposed mercury cups 39 are socured to the rings 38 upon the exterior thereof, the said mercury cups being formed of channel iron or similar material and being shown as projecting radially from the rings and facing tangentially. It will also be observed that the bottom of each of the mercury cups is provided with a series of perforations 40. The arms of the spiders 37 project beyond the rings 38 and carry the spirally disposed perforate plates or screens as and %2. These perforate partitions or screens 41 and 122 are arranged alternately, the wider screens 42 extending in a radial direction nearer to the shaft or head of the spiders than the narrower screens 41. All of the perforate walls or screens a1 and 42 extend outwardly to the extreme ends of the radial arms of the spiders, the said perforate walls or screens being radially disposed when viewed in cross sect-ion, as shown by Fig. 3, and extending spirally through the agitating drum or reel from end to end thereof, as indicated in Fig. 2.

Both the gold extracting tube 19 and all of the parts of the agitating drum or reel are preferably formed of copper and become quickly coated over with mercury in the operation of the machine. The agitating drum is revolved continuously as the gold bearing material and water is caused to circulate therethrough. The gold bearing material is repeatedly picked up by the revolving screens or perforate partitions 41 and 42 and kept in constant agitation as it works its way through the tube, continually sifting through the screens as it passes along. The

mercury within the gold extracting tube will tracting tube, the said agitating drum being 1 formed with a series of radially disposed per- 1 forate plates and being provided at the periphery thereof with a series of longitudi- 1 nally disposed mercury cups.

naturally fall to the bottom, although as the agitating drum revolves this mercury will be picked up by the cups 39. While these mercury cups 89 are on their upward course the quicksilver will gradually sift through the perforations 10, and as the mercury cups reach the highest point in their travel the balance of the quicksilver or mercury will be gradually deposited into the water, thus maintaining a constant spray or shower of the quicksilver through the water inside the tube. The inner side of the tube, the screens, as well as the spiders or radial arms will thus become and continue thoroughly coated with mercury to which the particles of gold will attach and be held, while the tailing's will pass on through the tube. The mercury as it passes down through the water will also carry more or less fine gold to the bottom, and all of the gold will thus be effectively extracted from the gravel or ore. As the tailings and water emerge from the discharge end of the tube they are forcibly struck or engaged by the turbine or propeller wheel 25 and thrown over into the opposite compartment 22 of the tank 17. The tailings are removed from this compartment 22 of the tank by means of any suitable devices, while the water again enters the vertical elbow 18 through the opening 23 and is caused to circulate continuously through the machine.

The gold extracting tube 19 is formed :with a lower section 19 and an upper section 19 which are detachably connected to each other, the lower section being shown in the present instance as considerably smaller than the upper section. (See Fig. at.) The lower section is suitably positioned upon the bottom of the tank 17 between the two sills or beams 4L3, while the upper section 19 rests removably upon the lower section, strips 41 being carried by the edges of the lower section and overlapping the joints be tween the sections so as to prevent leakage. The upper section may be suitably reinforced by means of the transverse angle iron ribs 45 which are fitted upon the exterior thereof, and opposite ends of the section 19" are formed with the eyes or cable attaching members 16 to which the lower ends of suitably controlled lifting cables may be connected to provide means whereby the upper section 19 of the gold extracting tube can be lifted from position and the agitating drum removed for the purpose of treating the same to recover the gold therefrom.

Having thus described the invention, what I claim as new and desire to secure by Letters Patent, is

1. A minino' machine including a gold extracting tube containing mercury and adapted to have the gold bearing material circulated therethrough, and a rotary agitating drum mounted within the gold ex- 2. A mining machine including a gold extracting tube containing mercury and adapted to have the gold bearing material circulated through the same, and a rotary agitating drum mounted within the gold extracting tube, the said agitating drum being provided with a series of perforate mercury cups.

3. A mining machine including a gold extracting tube containing mercury and adapted to have the gold bearing material circulated through the same, and a rotary V agitating drum mounted within the gold extracting tube, the said agitating drum being provided with a series of longitudinally disposed mercury cups having perforate bottoms.

4. A mining machine including a gold extracting tube containing mercury and adapted to have the gold bearing material circulated through the same, and a rotary agitating drum mounted within the gold extracting tube, the said agitating drum being provided at the periphery thereof with a series of perforate mercury cups and being also formed with spirally disposed bafie plates.

5. A mining machine including a substantially horizontally disposed gold extracting tube containing mercury and adapted to have the gold bearing material circulated through the same, and a rotary agitating drum mounted within the gold extracting tube, the said agitating drum being provided at the periphery thereof with longitudinally disposed mercury cups having perforate bottoms and being also formed with inwardly projecting spirally disposed perforate baflie plates.

6. A mining machine including a substantially horizontally disposed gold extracting tube containing mercury and adapted to have the gold bearing material circulated through the same, a shaft extending longitudinally through the tube, spiders upon ,the shaft, rings carried by the respective spiders, longitudinal mercury cups mounted upon the rings, and inwardly projecting spirally disposed baffle plates mounted upon the arms of the spiders.

7 A mining machine including a substantially horizontally disposed gold ex tracting tube, a water tank arranged at one 7 side of the gold extracting tube, a vertical elbow leading to the feed end of the gold extracting tube and formed with a lateral water intake in communication with the tank, a lateral elbow leading from the discharge end of the gold extracting tube to the water tank, each of the said elbows being formed with a bearing which is in substantial alinement with the axis of the gold extracting tube, a shaft jo-urnaled within one of the bearings, a propeller mounted within the corresponding elbow and carried by the shaft for causing the water and gold bearing material to circulate through the gold extracting tube, a shaft journaled in the bearing of the opposite elbow, and a rotary agitator mounted within the gold extracting tube and driven by the second mentioned shaft, the water circulating continuously through the tank and gold extracting tube and being used repeatedly while the tailings collect in the tank.

8. A mining machine including a substantially horizontally disposed gold extracting tube, a water tank, a vertical elbow leading to the feed end of the gold extracting tube and formed with a lateral water intake in communication with the tank, a lateral elbow leading from the discharge end of the gold extracting tube to the water tank, a rotary agitator within the gold extracting tube, a propeller within the lateral elbow for causing the water and gold hearing material to circulate through the gold extracting tube, and a drive shaft extending through the opposite elbow and having an operative connection with the agitator, the water circulating continuously through the tank and gold extracting tube and being used repeatedly while the 'tailings collect in the tank.

9. A mining machine including a tank, a partition dividing the tank into two compartments, a gold extracting tube disposed in one compartment, the opposite compartment being adapted to contain water, a vertical elbow leading to the feed end of the gold extracting tube and. formed with a lateral water intake in communication with the water compartment, a lateral elbow leading from the discharge end of the gold extracting tube to the water compartment, and means for causing the water and gold bearing material to circulate through the gold extracting tube and water compartment.

10. A mining machine including a tank, a partition dividing the tank into two compartments, a gold extracting tube disposed in one compartment, the opposite compartment being adapted to contain water, a guideway leading to the feed end of the gold extracting tube and formed with a water intake in communication with the water compartment, a guideway leading from the discharge end of the gold extracting tube to the water compartment, an agitator within the gold extracting tube, a drive shaft extending into each of the guideways and a propeller upon one of the drive shafts for circulating the material through the gold extracting tube, the opposite drive shaft having an operative connection with CHARLES R. DENNISON.

Witnesses:

EDWARD E. MILLER, AGNES A. JOHNSTON.

copies of this patent may be obtained for five cents each, by addressing the Commissioner of Patents, Washington, D. 0. 

